1. In a cone pulley, if the sum of radii of the pulleys on the driving and driven shafts is constant, then ?

open belt drive is recommended

crossed belt drive is recommended

both open belt drive and crossed belt drive is recommended

the drive is recommended depending upon the torque transmitted

Answer: crossed belt drive is recommended

Explanation:


2. The mechanism in which two are turning pairs and two are sliding pairs, is called a ?

double slider crank chain

elliptical trammel

Scotch yoke mechanism

all of these

Answer: all of these

Explanation:


3. The contact ratio is the ratio of ?

length of pair of contact to the circular pitch

length of arc of contact to the circular pitch

length of are of approach to the circular pitch

length of arc of recess to the circular pitch

Answer: length of arc of contact to the circular pitch

Explanation:


4. A rotary internal combustion engine has .............. cylinders ?

four

five

six

seven

Answer: seven

Explanation:


5. The component of the acceleration, parallel to the velocity of the particle, at the given instant is called ?

radial component

tangential component

coriolis component

none of these

Answer: tangential component

Explanation:


6. The coriolis component of acceleration exists whenever a point moves along a path that has ?

linear displacement

rotational motion

gravitational acceleration

tangential acceleration

Answer: rotational motion

Explanation:


7. The power transmitted by a belt is maximum when the maximum tension in the belt is...........of centrifugal tension ?

one-third

two-third

double

three times

Answer: three times

Explanation: